Improvement in hot-air-furnace attachments



B. T. BABBITT.

Hot-Air Furnace Attachments. N0 .152,820.

Patented July 7, 1874.

'me omvmc CO.PHCTOLITH.395. 4| PARK Puczmm UNrTEio STATES PATENT OFFICE.

BENJAMIN T. BABBITT, OF NEW YORK, N. Y.

IMPROVEMENT IN HOT-AlR-FURNACE ATTACHMENTS.

Specificaticn forming part of Letters Patent No. 1 52,820, dated July 7,1874; application filed February 7, 1874.

To all whom it may concern:

Be it known that I, BENJAMIN T. BABBITT,

of the city, county, and State of New York, have invented an Improvementin Attachments to Hot-Air Furnaces for house-warming and other purposes;of which the following is a specification:

This invention consists in an attachment to a furnace, composed of acertain combination of air-heating pipes or fiues and upper and lowercompartments, whereby the air to be heated is made to circulate up anddown said flues in a reverse direction as regards the general course ofthe current to the escaping products of combustion which circulatearound and among the air-heating fines, and so that after the air hasbeen thus partially heated, it is finally and more fully heated by beingcaused to circulate around the furnace and within a surrounding jacket,from which it is finally drawn or taken to be applied as required, thewhole forming a most perfect and economical air-heating apparatus, andin which the air is highly heated by the escaping gases before it comesincontact with the fire-pot or furnace.

Inthe accompanying drawing, Figure 1 represents a vertical longitudinalsection of my improvement on the line 00 w, and Fig. 2 a horizontalsection on the line y 3 Similar letters of reference indicatecorresponding parts.

A is the fire-pot or furnace, B its grate, and O the ash-pit. D is thefiring door .or mouth, and E the primary outlet for the escapingproducts of combustion. F is a hot-air jacket surrounding or inclosin gthe fire-pot and ashpit. G is an air-heatin g attachment, composed ofany number of upper and lower compartments, H H H H H, and irregularlydis- -down certain of the fines I to the next lower compartment H upthrough another series of the flues I to the upper compartment H andfrom thence down another series of pipes Ito the front lower compartmentH; from whence, thus iiartially or highly heated, it enters the jacket Fby a lower inlet, L, and, after receiving a further addition of heatfrom the inclosed firepot or furnace A, around which it circulates,escapes or is drawn off as required by one or more outlet-pipes, M.

The number of reverscly circulating air heating pipes I and upper andlower compartments with which. they connect may be increased ordiminished at pleasure.

I claim In combination with the furnace A, having the outlet E andinclosed by the air-heating jacket F, the vertical air-circulating pipesI and air-compartments H H H H E, into which the air'pipes open, and theinlet K and the outlet L, the whole being constructed substantially asshown, for the purpose specified.

Y'Vitnesses:

MIoHAEL RYAN, FRED. HAYNEs.

